HeatCAD and LoopCAD are ACCA®-Approved for Manual J® residential heating and cooling load calculations. The MJ8 Editions of these programs have been specifically designed for the newest Manual J Standard (8th Edition, Version 2.50) and have undergone rigorous testing and review to ensure compliance and to attain the ACCA-Approved status. Click here for ACCA's listing of approved software.



The implementations of Manual J in HeatCAD and LoopCAD are the advanced standard-compliant calculations (not the Abridged Edition limited version). Our programs offer advanced calculations and options such as block, room and peak loads, AED calculations and graphs, October cooling load evaluations, and standard-compliant reports. And the custom Manual J Review step provides an easy and fast way to check key data and settings in your project design.
Users of the MJ8 Editions are strongly encouraged to purchase a copy of the Manual J standard to use in conjunction with the software. In ACCA's words...
"Software is a powerful and useful tool, but it is not magic. If Manual J software is not used correctly it will produce an inaccurate and misleading answer, and those that have not studied Manual J will not know the difference. [ACCA Manual J 8th Edition, Section 2-5]"
The Manual J Standard also includes important limitations and a defined scope of applicability. It is critical that you understand what these limitations are and how they apply to your work. A good starting point are ACCA's "Do's and Don'ts" (Section 2-3), but a thorough understanding of the entire Manual J standard is required for the proper use of these programs.
Visit the ACCA Online Store for purchasing information for the Manual J standard.
The following highlights key features in the MJ8 Editions for both HeatCAD and LoopCAD. For a detailed comparison of features refer to the HeatCAD Features page or the LoopCAD Features page.






- Form J1
- Load Summary
- Load Report
- AED Report


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